CA2771230A1 - Drive arrangement, for an electric bicycle for example - Google Patents

Drive arrangement, for an electric bicycle for example Download PDF

Info

Publication number
CA2771230A1
CA2771230A1 CA2771230A CA2771230A CA2771230A1 CA 2771230 A1 CA2771230 A1 CA 2771230A1 CA 2771230 A CA2771230 A CA 2771230A CA 2771230 A CA2771230 A CA 2771230A CA 2771230 A1 CA2771230 A1 CA 2771230A1
Authority
CA
Canada
Prior art keywords
drive arrangement
energy
motor
cable
energy source
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
CA2771230A
Other languages
French (fr)
Inventor
Christian Eckart
Martin Arnold
Martin Singhammer
Willem Blakborn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rosenberger Hochfrequenztechnik GmbH and Co KG
Original Assignee
Rosenberger Hochfrequenztechnik GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rosenberger Hochfrequenztechnik GmbH and Co KG filed Critical Rosenberger Hochfrequenztechnik GmbH and Co KG
Publication of CA2771230A1 publication Critical patent/CA2771230A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62JCYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J11/00Supporting arrangements specially adapted for fastening specific devices to cycles, e.g. supports for attaching maps
    • B62J11/10Supporting arrangements specially adapted for fastening specific devices to cycles, e.g. supports for attaching maps for mechanical cables, hoses, pipes or electric wires, e.g. cable guides
    • B62J11/19Supporting arrangements specially adapted for fastening specific devices to cycles, e.g. supports for attaching maps for mechanical cables, hoses, pipes or electric wires, e.g. cable guides specially adapted for electric wires
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00Electric propulsion with power supplied within the vehicle
    • B60L50/50Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/53Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells in combination with an external power supply, e.g. from overhead contact lines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62MRIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M6/00Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
    • B62M6/40Rider propelled cycles with auxiliary electric motor
    • B62M6/45Control or actuating devices therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62MRIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M6/00Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
    • B62M6/80Accessories, e.g. power sources; Arrangements thereof
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2200/00Type of vehicles
    • B60L2200/12Bikes
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00Power cables
    • H01B9/04Concentric cables
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage systems for electromobility, e.g. batteries

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

The present invention relates to a drive arrangement, comprising an electric motor, an energy source for electrical energy, and an energy transmission cable, which electrically connects the energy source to the electric motor and which is designed as a coaxial cable.

Description

Drive arrangement, for an electric bicycle for example The present invention relates to a drive arrangement having an electric motor, an energy source for electrical energy and an energy-transmitting cable which connects the energy source to the electric motor electrically, as defined in the preamble to claim 1. The invention also relates to a light electrical vehicle (LEV) and in particular an electric bicycle and in particular a pedelec (pedal electric cycle) or E-bike, having a drive arrangement, as defined in the preamble to claim 8. The invention also relates to a powered vehicle, and in particular a one-track or two-track powered vehicle and in particular an electric scooter, invalid carriage, moped (motor + pedal), motor cycle or car, as defined in the preamble to claim 9.
Electric bicycles and, in this context, particularly pedelecs (pedal electric cycles, i.e. pedal-assisted electric cycles) are known from, for example, the publication entitled "E-Motion - Ein Spezial von Radfahren & ExtraEnergy.org" ["E-Motion - A special from Radfahren Magazine and the ExtraEnergy Association"], BVA Bielefelder Verlag, 2009 are meeting with an increasingly enthusiastic public response. On a pedelec, which in essence is constructed in the same way as a conventional bicycle with a pedal-equipped foot-power drive, there is provided an electric drive motor which is supplied by an energy source for electric energy and which, as a function of the force applied to the pedelec's pedals, provides a drive power additional to the muscle power. The electric motor is active when the pedals are pressed. The travel which the user experiences is like that with the wind behind him.

f L
2 PCT/EP2010/004632 Another group of electric bicycles includes what are referred to as E-bikes. In this case the motor is active when a throttle is turned. Travel with the electric motor is possible in this case even without the pedals being pressed. Muscle power and the electric motor are systems which operate independently of one another. E-bikes can be ridden both purely electrically and in mixed operation.
Regardless of how the electric motor functions and operates, all such electric vehicles have a drive to arrangement which has the electric motor and the electrical energy source. To transmit electrical energy from the energy source to the electric motor, the drive arrangement has an energy-transmitting cable which is electrically connected to the electric motor and the energy source. If required, there is also provided an electronic system which converts the voltage from the energy source to the operating voltage of the electric motor. Conventionally, these energy-transmitting cables take the form of two-core cables with suitable red and black colour coding for the negative and positive sides of the voltage.
The object underlying the invention is to improve a drive arrangement of the above kind in respect of the space it takes up, its processability and its mechanical strength.
This object is achieved in accordance with the invention by a drive arrangement of the above kind having the features given in the characterising clause of claim 1, by a light electrical vehicle (LEV) of the above kind having the features given in the characterising clause of claim 8, and by a powered vehicle having the features given in the characterising clause of claim 9. Advantageous embodiments of the invention are described in the other claims.

C
3 PCT/EP2010/004632 In a drive arrangement of the above kind, provision is made in accordance with the invention for the energy-transmitting cable to take the form of a co-axial cable.
This has the advantage that a compact drive s arrangement becomes available which requires little space for the energy-transmitting cable, the energy-transmitting cable having, at the same time, high mechanical strength.
Co-axial cables can be processed and provided with plug-in connectors easily. At the same time, the energy-transmitting cable is screened against any unwanted coupling-in of high-frequency radiation. If desired, the energy-transmitting cable can also be used as a data transmission cable from the electric motor to a controlling electronic system without a further cable being required for this purpose.
A drive arrangement which is particularly compact and mechanically strong in respect of the energy-transmitting cable is obtained by virtue of the fact that the co-axial cable has at least one centre conductor, at least one outer conductor, at least one insulator arranged between the centre conductor and the outer conductor, and at least one electrically insulating sheath which surrounds the outer conductor.
Because the outer conductor and the centre conductor 2s are each connected to the energy source and the electric motor, the outer conductor is also used for transmitting energy and not simply as screening.
The electric motor is usefully a d.c. motor or an a.c.
motor.
A high drive power from the drive arrangement is obtained by designing the co-axial cable to transmit high electrical currents and in particular electrical currents
4 PCT/EP2010/004632 equal to or greater than 30 A and in particular equal to or greater than 50 A.
A high torque from the drive arrangement is obtained by designing the co-axial cable for voltages of 0 to 100 V
s and in particular for 48 V.
A high energy density for the energy source is obtained by making the energy source for electrical energy a battery or a storage battery, and in particular a nickel metal hybride [sic] storage battery, a nickel-cadmium storage battery, a lead storage battery or a lithium-ion storage battery, or a generator.
In a light electric vehicle (LEV) of the above kind, provision is made in accordance with the invention for the electric cycle to have a drive arrangement as described above.
This has the advantage that what becomes available is an LEV having a compact drive arrangement which requires little room for the energy-transmitting cable, the energy-transmitting cable having, at the same time, high mechanical strength. Co-axial cables can be processed and provided with plug-in connectors easily. At the same time, the energy-transmitting cable is screened against any unwanted coupling-in of high-frequency radiation. if desired, the energy-transmitting cable can also be used as a data transmission cable from the electric motor to a controlling electronic system without a further cable being required for this purpose.
In a powered vehicle of the above kind, provision is made in accordance with the invention for the powered vehicle to have a drive arrangement as described above.
This has the advantage that what becomes available is a powered vehicle having a compact drive arrangement which requires little room for the energy-transmitting cable, the
5 PCT/EP2010/004632 energy-transmitting cable having, at the same time, high mechanical strength. Co-axial cables can be processed and provided with plug-in connectors easily. At the same time, the energy-transmitting cable is screened against any s unwanted coupling-in of high-frequency radiation. If desired, the energy-transmitting cable can also be used as a data transmission cable from the electric motor to a controlling electronic system without a further cable being required for this purpose.
The invention will be described in detail in what follows by reference to the drawings. In the drawings Fig. 1 is a schematic view of a preferred embodiment of drive arrangement according to the invention.
Fig. 2 is a view in section of region A in Fig. 1, taken on a line I-I in Fig. 1.
The preferred embodiment of drive arrangement according to the invention which is shown in Fig. 1 comprises an electric motor 10, an electrical energy source 12 and an energy-transmitting cable 14 which connects the electric motor 10 to the electrical energy source 12 electrically.
In accordance with the invention, the energy-transmitting cable 14 takes the form of a co-axial cable.
As can be seen from Fig. 2, this co-axial cable comprises a centre conductor 16 and an outer conductor 18 which surround the centre conductor 16 co-axially, a dielectric 20 being arranged between the centre conductor 16 and the outer conductor 18. The co-axial cable 12 also has a sheath 22, made of an electrically insulating material, which surrounds the outer conductor.
The electric motor 10 is for example a d.c. motor and the co-axial cable 12 transmits a d.c. electrical current
6 PCT/EP2010/004632 of an intensity of < 30 A or ~ 50 A from the electrical energy source 12 to the electric motor 10.
The electrical energy source 12 is preferably a lithium storage battery. It is however also possible for s the electrical energy source 12 not to be a means of storing energy such as a battery or storage battery but to be an electrical generator which converts mechanical driving energy into electrical energy. This generator is for example an internal combustion engine.
It is particular advantageous for a electric vehicle, such for example as a pedelec or an E-bike, to be equipped with this drive arrangement because the co-axial cable 12 which is used as a power cable for transmitting energy from the electric energy storage means 12 to the electric motor 10 has mechanical properties in respect of thickness, strength in bending, insensitivity to ambient effects, life and tear strength which are similar to and sometimes better than those of a Bowden cable used in bicycles. This co-axial cable 12 can therefore be fitted to the pedelec in the same way as a Bowden cable with no special precautions.
At the same time, due to its construction, the co-axial cable 12 makes a power cable for transmitting high electrical powers from the electrical energy source 12 to the electric motor 10 available in a compact form, i.e. one which requires only a small amount of space. The amount of space required is considerably smaller than is required by the two-core power cables which would otherwise usually be used for these high electrical current intensities of up to A or 50 A or more.
30 There are also a large number of devices and machines available for processing co-axial cables and assembling them, cutting them to length and providing them with
7 PCT/EP2010/004632 connectors at their ends, and even doing so by automated processes and in large quantities.
In addition, what are also usually required in drive arrangements of this kind are cables for transmitting data in the form of high-frequency signals from for example a motor control unit to the electric motor 10 or from the electrical energy source 12 to the motor control unit. In a particularly advantageous way, the co-axial cable used as the power cable can be used in an identical form for this because it already has the screening and impedance required for transmitting high-frequency electrical signals. A
supply of different types of cable therefore does not have to be kept available for data transmission and energy transmission and instead one and the same co-axial cable, merely fitted with different connectors, can be used. This simplifies production and assembly processes and the associated logistics.

Claims (7)

claims
1. Drive arrangement having a d.c. motor (10), an energy source (12) for electrical energy and an energy-transmitting cable (14) which connects the energy source (12) to the d.c. motor (10) electrically, characterised in that the energy-transmitting cable (14) takes the form of a co-axial cable which has at least one centre conductor (16), at least one outer conductor (18), at least one insulator (20) arranged between the centre conductor (16) and the outer conductor (18), and at least one electrically insulating sheath (22) which surrounds the outer conductor (18), one outer conductor and one centre conductor each being electrically connected to the energy source and the d.c. motor.
2. Drive arrangement according to at least one of the preceding claims, characterised in that the co-axial cable (14) is designed to transmit high electrical currents and in particular electrical currents equal to or greater than 30 A and in particular 50 A.
3. Drive arrangement according to at least one of the preceding claims, characterised in that the co-axial cable (14) is designed for voltages of 0 to 100 V and in particular of 48 V.
4. Drive arrangement according to at least one of the preceding claims, characterised in that the energy source (12) for electrical energy is a battery or a storage battery, and in particular a nickel metal hybride [sic]
storage battery, a nickel-cadmium storage battery, a lead storage battery or a lithium-ion storage battery, and/or a generator.
5. Drive arrangement according to at least one of the preceding claims, characterised by a motor control unit, the co-axial cable being used to transmit data in the form of high frequency signals from the motor control unit to the d. c. motor or from the energy source to the motor control unit.
6. Light electric vehicle (LEV) and in particular an electric bicycle and particularly a pedelec (pedal electric cycle) or E-bike, having a drive arrangement, characterised in that the electric bicycle has a drive arrangement according to at least one of the preceding claims.
7. Powered vehicle, and in particular a one-track or two-track powered vehicle and in particular an electric scooter, invalid carriage, moped (motor + pedal), motor cycle or car, characterised in that the powered vehicle has a drive arrangement according to at least one of claims 1 to 5.
CA2771230A 2009-08-14 2010-07-28 Drive arrangement, for an electric bicycle for example Abandoned CA2771230A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE202009011111.3 2009-08-14
DE202009011111U DE202009011111U1 (en) 2009-08-14 2009-08-14 Drive arrangement, for example for an electric bicycle
PCT/EP2010/004632 WO2011018164A1 (en) 2009-08-14 2010-07-28 Drive arrangement, for example for an electric bicycle

Publications (1)

Publication Number Publication Date
CA2771230A1 true CA2771230A1 (en) 2011-02-17

Family

ID=41180849

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2771230A Abandoned CA2771230A1 (en) 2009-08-14 2010-07-28 Drive arrangement, for an electric bicycle for example

Country Status (9)

Country Link
US (1) US20120205970A1 (en)
EP (1) EP2464536B1 (en)
JP (1) JP5623525B2 (en)
CN (1) CN102639355B (en)
CA (1) CA2771230A1 (en)
DE (1) DE202009011111U1 (en)
HK (1) HK1174594A1 (en)
TW (1) TWM396768U (en)
WO (1) WO2011018164A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013013713A1 (en) * 2011-07-27 2013-01-31 Siemens Aktiengesellschaft Charging cable

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Also Published As

Publication number Publication date
EP2464536B1 (en) 2018-09-12
DE202009011111U1 (en) 2009-10-15
JP5623525B2 (en) 2014-11-12
HK1174594A1 (en) 2013-06-14
EP2464536A1 (en) 2012-06-20
JP2013501666A (en) 2013-01-17
WO2011018164A1 (en) 2011-02-17
CN102639355B (en) 2016-08-03
US20120205970A1 (en) 2012-08-16
TWM396768U (en) 2011-01-21
CN102639355A (en) 2012-08-15

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Legal Events

Date Code Title Description
EEER Examination request

Effective date: 20150619

FZDE Discontinued

Effective date: 20170728